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Flange Material ---- SA350LF2

Writer:Rongcheng Technial DepartmentNumber of visits: Date:2013-10-28 14:28

When doing international business of forged flanges and ring forgings, SA350 LF2 is a usually use carbon steel material AISI flanges. Especially for the customers who choose AISI standard as their flanges standard, this is very important to them.

 

So as a manufacturer and exporter, it is very important to know SA350’s chemical composition and its technical properties, knowing this will be helpful for us to control the quality of forging products during manufacturing.

 

SA350LF2 raw material is a carbon steel grade that intended for low-temperature service and it needs notch toughness test. This material is very similar to SA105N, like SA105, this material is used for industrial applications of oil and gas industries.

 

Heat Treatment: First Heat to a temperature for forging to change steel into austenitic struture, and holding enough time to reach uniform temperature throughout, then Normalization, Or Quenched and Tempered.

 

 SA 350LF2' s chemical compositions:

 

Steel Grade

composition%

max

Mn

P

max

S

max

Si

Cu

max

Ni

max

Cr

max

Mo

max

V

max

Cb

max

SA350 LF2

0.30

0.60-1.35

0.035

0.04

0.15-0.30

0.40

0.40

0.30

0.12

 

0.02

 

SA 350LF2' s  technical properties:

 

 

Steel Grade

Tensile Strength σb/

MPa

Yield Strength σs/

MPa

Elongation δs

%

Reduction of area ψ/

%

Impact

Aκ/J

Hardness/

HB

SA350 LF2

485-655

≥250

≥22

≥40

≤187